S
M
T
W
T
F
S
30
52°
35°
31
54°
35°
1
56°
38°
2
58°
42°
3
58°
37°
4
71°
39°
5
70°
43°
6
69°
40°
7
63°
46°
8
58°
47°
9
53°
45°
10
52°
34°
11
60°
31°
12
62°
40°
13
60°
33°
14
60°
31°
15
57°
31°
16
65°
37°
17
58°
33°
18
51°
36°
19
56°
46°
20
56°
41°
21
54°
39°
22
52°
30°
23
54°
32°
24
52°
28°
25
53°
29°
26
50°
33°
27
52°
35°
28
N/A
29
50°
32°
30
52°
37°
1
50°
32°
2
47°
30°
3
45°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Whitehorse
Whitehorse's September 2026 forecast shows daily high temperatures ranging from 45° to 52°, with overnight lows between 30° and 40°. The average high for September is 49° with an average low of 34°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Whitehorse. See also: October | November | December.
